Analytical Sensitivity of Plastic Rotations in Beam-Column Elements
Publication: Journal of Structural Engineering
Volume 133, Issue 9
Abstract
Analytical sensitivity equations for the plastic rotation of beam-column finite elements are derived for reliability and optimization algorithms in structural engineering and for the assessment of plastic rotation sensitivity to uncertain design parameters and modeling assumptions. The plastic rotation is defined by elastic unloading of element forces in a basic system, which makes the corresponding sensitivity computations applicable to most material nonlinear beam-column formulations available in the literature. The analytical response sensitivity is verified by finite differences then applied to a first-order reliability analysis of a steel subassemblage where the performance function places a limit on plastic rotation.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 9 • September 2007
Pages: 1341 - 1345
Copyright
© 2007 ASCE.
History
Received: Aug 24, 2005
Accepted: Mar 5, 2007
Published online: Sep 1, 2007
Published in print: Sep 2007
Notes
Note. Associate Editor: Keith D. Hjelmstad
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